Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of method for green efficient synthetic cyclohexanone

A synthesis method and technology of cyclohexanone, applied in chemical instruments and methods, preparation of organic compounds, preparation of carbon-based compounds, etc., can solve the problems of low selectivity, low photocatalytic activity, weak visible light response, etc., and achieve non-corrosion The effect of equipment and energy consumption is small

Active Publication Date: 2018-05-22
HUNAN UNIV
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these photocatalysts still have disadvantages such as low photocatalytic activity, weak response to visible light, and low selectivity of cyclohexane and cyclohexanol, so finding a high-efficiency photocatalyst has become a research hotspot.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] According to the molar ratio of silver nitrate and bismuth nitrate in the reaction mixture is 1:1, take 30ml of 20mM silver nitrate solution and add dropwise to 40ml of 20mM melamine solution, let stand for 3h to form solution A; dissolve 0.070g of ammonium metavanadate in 25ml of 1M Solution B was obtained in sodium hydroxide solution; AB was mixed and stirred for 1 hour to obtain solution C; 0.291g of bismuth nitrate pentahydrate was dissolved in 50ml of 1M dilute nitric acid solution and stirred to obtain clear solution D; CD was mixed and mixed with 1M sodium hydroxide The solution was adjusted to neutral and stirred rapidly for 1h. Separation by filtration, washing with deionized water three times, washing with absolute ethanol once, and drying at 80°C for 6 hours to obtain the precursor.

[0027] Put the obtained precursor in a ceramic dry pot with a cover, then put the dry pot in a muffle furnace to bake, control the heating rate at 5°C / h, rise from room temperat...

Embodiment 2

[0031] According to the molar ratio of silver nitrate and bismuth nitrate in the reaction mixture is 1:2, take 30ml of 20mM silver nitrate solution and add it dropwise to 40ml of 20mM melamine solution, let stand for 3h to form solution A; dissolve 0.140g of ammonium metavanadate in 25ml of 1M Solution B was obtained in sodium hydroxide solution; AB was mixed and stirred for 1 hour to obtain solution C; 0.582g bismuth nitrate pentahydrate was dissolved in 50ml 1M dilute nitric acid solution and stirred to obtain clear solution D; CD was mixed and mixed with 1M sodium hydroxide The solution was adjusted to neutral and stirred rapidly for 1h. Separation by filtration, washing with deionized water three times, washing with absolute ethanol once, and drying at 80°C for 6 hours to obtain the precursor.

[0032] Put the obtained precursor in a ceramic dry pot with a cover, then put the dry pot in a muffle furnace to bake, control the heating rate at 5°C / h, rise from room temperature...

Embodiment 3

[0036]According to the molar ratio of silver nitrate and bismuth nitrate in the reaction mixture is 1:4, take 30ml of 20mM silver nitrate solution and add it dropwise to 40ml of 20mM melamine solution, let stand for 3h to form solution A; dissolve 0.280g of ammonium metavanadate in 25ml of 1M Solution B was obtained in sodium hydroxide solution; AB was mixed and stirred for 1 h to obtain solution C; 1.164 g of bismuth nitrate pentahydrate was dissolved in 50 ml of 1M dilute nitric acid solution and stirred to obtain clear solution D; CD was mixed and mixed with 1M sodium hydroxide The solution was adjusted to neutral and stirred rapidly for 1h. Separation by filtration, washing with deionized water three times, washing with absolute ethanol once, and drying at 80°C for 6 hours to obtain the precursor.

[0037] Put the obtained precursor in a ceramic dry pot with a cover, then put the dry pot in a muffle furnace to bake, control the heating rate at 5°C / h, rise from room tempera...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a green and efficient method for synthesizing cyclohexanone. The method includes dispersing the catalyst in a solvent, adding cyclohexane, flowing in oxygen, controlling the temperature of the reaction solution to room temperature, and then illuminating the catalyst for 0.5-24 hours to prepare cyclohexanone. The present invention can improve the conversion rate of cyclohexanone by controlling the proportion of the catalyst, and the selectivity of the prepared cyclohexanone is greater than 99%. The invention has the characteristics of green, high efficiency, low energy consumption and simple preparation process.

Description

【Technical field】 [0001] The invention relates to the field of photocatalytic oxidation, in particular to a method for green and efficient synthesis of cyclohexanone. 【Background technique】 [0002] As an important chemical raw material, cyclohexanone is mainly used to produce chemical intermediates such as caprolactam and adipic acid, and caprolactam and adipic acid are monomers for the production of nylon 6 and nylon 66. This field accounts for about 70% of the consumption of cyclohexanone; the rest is mostly used in organic solvents, and non-nylon fields such as inks, pharmaceuticals, pesticides, adhesives, and photosensitive materials. At present, the production process of cyclohexanone mainly includes phenol oxygenation method, cyclohexene hydration method and cyclohexanone liquid phase oxidation method. Among them, the phenol oxygenation method accounts for about 3%. The advantage of this method is that the product quality is good, and the yield of cyclohexanone is hi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C07C45/32C07C49/403B01J23/68
CPCC07C45/32B01J23/002B01J23/682B01J2523/00B01J35/39C07C49/403B01J2523/18B01J2523/54B01J2523/55
Inventor 尹双凤陈鹏陈浪贺捷刘英彭自祥曾煌凯宋璐娜蔡凯
Owner HUNAN UNIV